CN215721194U

CN215721194U - Sealing packing device for valve rod of control valve

Info

Publication number: CN215721194U
Application number: CN202120468629.4U
Authority: CN
Inventors: 李岩
Original assignee: Shandong Gaona Automatic Control Equipment Co ltd
Current assignee: Shandong Gaona Automatic Control Equipment Co ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2022-02-01
Anticipated expiration: 2031-03-04

Abstract

The utility model relates to the technical field of sealing packing, in particular to a sealing packing device for a control valve rod. The novel packing box overcomes the defects of the prior art, and is provided with the rotating shaft, the packing groove, the rotating ring and the rotating base, so that when new packing needs to be replaced, the rotating ring rotates firstly, the rotating ring rotates to drive the rotating shaft and the rotating base to rotate, the packing groove on the surface of the rotating shaft also synchronously rotates, the new packing can be rolled into the packing groove from the upper end of one side of the packing groove, the old packing can be spread out from the lower end of one side of the packing groove, the packing in the packing groove is replaced with the old packing, the old packing does not need to be buckled out firstly and then replaced into the packing groove, mechanical collision and friction are avoided on the inner part of the packing groove, the wear of tools on the packing groove is reduced, and the service life of the packing groove is prolonged.

Description

Sealing packing device for valve rod of control valve

Technical Field

The utility model relates to the technical field of sealing packing, in particular to a sealing packing device for a valve rod of a control valve.

Background

In the American Petroleum institute standard, for important valves for oil or gas production, a reliable sealing connection is required to be provided between a valve rod and a valve cover, the valve rod and the valve cover can be designated as carriers, the material of valve rod sealing packing is GTFE (polytetrafluoroethylene + 25% glass fiber), the Shore hardness reaches HD58.8, the material completely meets the capabilities of resisting fluidized hydrogen and bearing high pressure in performance, and also meets the requirements of API6A and NACE MR 0175.

But the packing of present sealing filler device for control valve rod when changing the packing of packing inslot, need detain old packing earlier and change new packing into again, make the in-process of detaining old packing can produce mechanical collision and friction to the packing groove, cause wearing and tearing to the packing groove easily, the life in packing groove has been accelerated, and present sealing filler device for control valve rod is owing to need unpack the clamp plate apart just can carry out height-adjusting, and the clamp plate of taking apart need hang fixedly temporarily with the instrument and avoid dropping, thereby make to increase the dismantlement work load to maintaining the workman, be unfavorable for in-service use.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a sealing filler device for a control valve rod, which overcomes the defects of the prior art, has simple structural design and effectively solves the problems that when the existing sealing filler device for the control valve rod is used for replacing filler in a filler groove, the old filler needs to be firstly buckled out and then replaced by new filler, so that mechanical collision and friction can be generated on the filler groove in the process of buckling the old filler, the filler groove is easily abraded, the service life of the filler groove is prolonged, the height of the existing sealing filler device for the control valve rod can be adjusted only by detaching a pressing plate, and the detached pressing plate needs to be temporarily suspended and fixed by using a tool to avoid falling, so that the detaching workload of maintenance workers is increased, and the actual use is not facilitated.

In order to solve the technical problems, the utility model provides the following technical scheme:

a sealing packing device for a control valve rod comprises a valve body, a valve rod and a valve rod thread, wherein the valve rod is connected to the middle part of the inner side of the valve body in a penetrating manner, and the valve rod thread is arranged in the middle part of the valve rod;

the upper end fixedly connected with actuating lever of valve rod, the sealed auxiliary storehouse of lower extreme fixedly connected with of valve body, the upside swing joint in sealed auxiliary storehouse has the fixed block, the lower extreme fixedly connected with axis of rotation of fixed block, the lower extreme fixedly connected with of axis of rotation rotates the base, the lower extreme fixedly connected with control valve base in sealed auxiliary storehouse, the lower extreme middle part of control valve base is provided with the choked flow storehouse, the lower extreme left side fixedly connected with feed liquor pipe of control valve base, the lower extreme right side fixedly connected with drain pipe of control valve base.

As a preferable technical scheme of the utility model, the middle part of the rotating shaft is provided with a packing groove, one side of the packing groove is provided with packing, and the packing grooves are distributed on the outer side surface of the rotating shaft in a surrounding manner.

As a preferred technical solution of the present invention, a main gear is fixedly connected to a lower end of the rotating base, auxiliary gears are disposed on one side of the main gear, a housing is disposed on an outer side of the auxiliary gears, and the auxiliary gears are symmetrically distributed around the main gear.

As a preferred technical scheme of the utility model, the lower end of the fixed block is provided with a pressing plate, the middle part of the pressing plate is provided with a through hole, the through hole is in through connection with the rotating shaft, the middle part of the upper end of the fixed block is movably connected with a rotating ring, and the rotating ring is fixedly connected with the rotating shaft.

As a preferable technical scheme of the utility model, one side of the fixing block is provided with a screw hole, the middle part of the screw hole is provided with an adjusting bolt, one side of the adjusting bolt is provided with an adjusting nut, and the adjusting bolt is fixedly connected with the pressure plate.

As a preferable technical scheme of the utility model, the flow choking bin is positioned right below the valve rod, and the inner diameter of the flow choking bin is matched with the outer diameter of the valve rod.

The embodiment of the utility model provides a sealing filler device for a control valve rod, which has the following beneficial effects: this sealing filler device is when changing the filler to the packing inslot, need not detain old filler earlier and change new packing into again, make can not produce mechanical collision and friction to the packing groove at the in-process of tearing old filler out from the packing groove, avoid the instrument to cause wearing and tearing to the packing groove, the life in packing groove has been prolonged, and this sealing filler device need not unpack the clamp plate apart just can carry out height-adjusting, and the clamp plate after the height-adjusting need not hang fixedly with the instrument temporarily and avoid dropping, thereby make and reduced the dismantlement work load to maintaining the workman, do benefit to in-service use.

1. Through being provided with the axis of rotation, the packing groove, rotatory circle and rotating base, make when the packing of packing inslot needs to be changed, rotate rotatory circle earlier, the rotation of rotatory circle can take the axis of rotation and rotate the base rotatoryly, then the packing groove on axis of rotation surface also can follow the axis of rotation synchronous revolution, because the packing groove is to encircle the form and distributes on the axis of rotation surface, make new packing can be drawn into the packing inslot from one side upper end of packing groove, old packing then can spread from the lower extreme of packing groove one side, the realization is carried out with old renew to the packing of packing inslot, thereby make need not buckle out with old packing again and change new packing inslot, avoid producing mechanical collision and friction to the inside of packing groove, reducing tool causes wearing and tearing to the packing groove, the life in packing groove has been prolonged.

2. Through being provided with the fixed block, the clamp plate, adjusting bolt, adjusting nut and screw, when making need heighten the outer lane of clamp plate axis of rotation again, the adjusting nut of fixed block both sides is rotatory in adjusting bolt department earlier, adjusting bolt can rise or descend in the inboard of screw afterwards, because adjusting bolt is fixed connection with the clamp plate, make the clamp plate can follow adjusting bolt and go on position control from top to bottom, thereby make and need not unpack the clamp plate apart just can carry out height-adjusting, and the clamp plate after the height-adjusting need not hang fixedly with the instrument temporarily and avoid dropping, the dismantlement work volume to the maintenance workman has been reduced, do benefit to in-service use.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the construction of the rotating shaft and rotating base of the present invention;

fig. 3 is a schematic view of the fixing block structure of the present invention.

In the figure: 1. a valve body; 2. a valve stem; 3. valve stem threads; 4. a drive rod; 5. sealing the auxiliary bin; 6. a fixed block; 7. a rotating shaft; 8. rotating the base; 9. a control valve base; 10. a flow blocking bin; 11. a liquid inlet pipe; 12. a liquid outlet pipe; 13. pressing a plate; 14. a packing groove; 15. a filler; 16. a gear housing; 17. a main gear; 18. an auxiliary gear; 19. adjusting the bolt; 20. a screw hole; 21. perforating; 22. a rotating ring; 23. and adjusting the nut.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b): as shown in fig. 1-3, a sealing packing device for a control valve rod comprises a valve body 1, a valve rod 2 and a valve rod thread 3, wherein the valve rod 2 is connected to the middle part of the inner side of the valve body 1 in a penetrating manner, and the valve rod thread 3 is arranged in the middle part of the valve rod 2;

the upper end fixedly connected with actuating lever 4 of valve rod 2, the sealed auxiliary bin 5 of lower extreme fixedly connected with of valve body 1, the upside swing joint in sealed auxiliary bin 5 has fixed block 6, the lower extreme fixedly connected with axis of rotation 7 of fixed block 6, the lower extreme fixedly connected with rotating base 8 of axis of rotation 7, the lower extreme fixedly connected with control valve base 9 of sealed auxiliary bin 5, the lower extreme middle part of control valve base 9 is provided with choked flow storehouse 10, the lower extreme left side fixedly connected with feed liquor pipe 11 of control valve base 9, the lower extreme right side fixedly connected with drain pipe 12 of control valve base 9.

The middle part of the rotating shaft 7 is provided with a packing groove 14, one side of the packing groove 14 is provided with packing 15, and the packing groove 14 is distributed on the outer side surface of the rotating shaft 7 in a surrounding manner;

in this embodiment, through this kind of design, make when the rotation of swivel collar 22 orders about axis of rotation 7 and rotating base 8 and rotates, the filled groove 14 on axis of rotation 7 surface also can follow axis of rotation 7 synchronous revolution, new packing can be drawn into in the filled groove 14 from one side upper end of filled groove 14, old packing then can be spread out from the lower extreme of filled groove 14 one side, the realization is carried out with old renew to the packing in filled groove 14, thereby make and need not detain old packing earlier and change new packing again and expect filled groove 14 in, avoid producing mechanical collision and friction to the inside of filled groove 14, the reducing tool causes wearing and tearing to filled groove 14.

Wherein, the lower end of the rotating base 8 is fixedly connected with a main gear 17, one side of the main gear 17 is provided with an auxiliary gear 18, the outer side of the auxiliary gear 18 is provided with a gear shell 16, and the auxiliary gears 18 are symmetrically distributed by taking the main gear 17 as the center;

in this embodiment, through this kind of design, make axis of rotation 7 and rotating base 8 after driving, main gear 17 and auxiliary gear 18 can follow rotating base 8 and carry out synchronous revolution, can carry out the slightness because of inertia when axis of rotation 7 and rotating base 8 stall and move, and auxiliary gear 18 at this moment can increase the swift current of main gear 17 and move the resistance, prevents axis of rotation 7 and rotating base 8 and moves, and it is more accurate to increase axis of rotation 7 and rotating base 8 pivoted position.

The lower end of the fixed block 6 is provided with a pressing plate 13, the middle part of the pressing plate 13 is provided with a through hole 21, the through hole 21 is in through connection with the rotating shaft 7, the middle part of the upper end of the fixed block 6 is movably connected with a rotating ring 22, and the rotating ring 22 is fixedly connected with the rotating shaft 7;

in this embodiment, with such a design, when the rotating ring 22 rotates and drives the rotating shaft 7 to rotate, the fixed block 6 and the pressing plate 13 are not affected, so that the driving operation of the rotating shaft 7 is easier.

Wherein, one side of the fixed block 6 is provided with a screw hole 20, the middle part of the screw hole 20 is provided with an adjusting bolt 19, one side of the adjusting bolt 19 is provided with an adjusting nut 23, and the adjusting bolt 19 is fixedly connected with the pressure plate 13;

in this embodiment, through this kind of design, when making need heighten the clamp plate 13 at the outer lane of axis of rotation 7, adjust nut 23 with fixed block 6 both sides is rotatory in adjusting bolt 19 department earlier, adjusting bolt 19 can rise or descend in the inboard of screw 20 afterwards, clamp plate 13 can follow adjusting bolt 19 and carry out position control from top to bottom, thereby make and need not unpack clamp plate 13 apart just can carry out the height-adjusting, and clamp plate 13 behind the height-adjusting need not hang fixedly with the instrument temporarily and avoid dropping, the dismantlement work load to the maintenance workman has been reduced.

Wherein, the flow resisting bin 10 is positioned right below the valve rod 2, and the inner diameter of the flow resisting bin 10 is matched with the outer diameter of the valve rod 2;

in this embodiment, through this kind of design for valve rod 2 is when the rotary drive of actuating lever 4, and valve rod 2 bottom can agree with choked flow storehouse 10 and be connected, makes valve rod 2 can be better in choked flow storehouse 10 block the liquid that feed liquor pipe 11 got into.

The working principle is as follows: when the filler in the filler groove needs to be replaced, the rotating ring 22 rotates, the rotating ring 22 can drive the rotating shaft 7 and the rotating base 8 to rotate, the filler groove 14 on the surface of the rotating shaft 7 can also rotate synchronously with the rotating shaft 7, new filler can be rolled into the filler groove 14 from the upper end of one side of the filler groove 14, the old filler can be spread out from the lower end of one side of the filler groove 14, the filler in the filler groove 14 can be replaced with the old filler, the old filler does not need to be buckled out and then replaced into the filler groove 14, mechanical collision and friction in the filler groove 14 are avoided, tools are reduced to wear the filler groove 14, after the new filler is installed in the filler groove 14, the adjusting nuts 23 on two sides of the fixing block 6 are screwed, the adjusting bolts 19 can be driven to ascend or descend by the rotation of the adjusting nuts 23, and the pressing plates 13 can be driven by the adjusting bolts 19 to perform up-and down position adjustment work, the position of the new filler in the filler groove 14 is adjusted and compacted, the tightness of the device to the new filler in the filler groove 14 is improved, and the sealing performance of the new filler to the valve rod 2 is improved.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The sealing packing device for the valve rod of the control valve comprises a valve body (1), a valve rod (2) and valve rod threads (3), and is characterized in that the valve rod (2) is connected to the middle part of the inner side of the valve body (1) in a penetrating manner, and the valve rod threads (3) are arranged in the middle part of the valve rod (2);

the utility model discloses a valve, including valve rod (2), the sealed supplementary storehouse of lower extreme fixedly connected with (5) of valve body (1), the upside swing joint in sealed supplementary storehouse (5) has fixed block (6), the lower extreme fixedly connected with axis of rotation (7) of fixed block (6), the lower extreme fixedly connected with of axis of rotation (7) rotates base (8), the lower extreme fixedly connected with control valve base (9) in sealed supplementary storehouse (5), the lower extreme middle part of control valve base (9) is provided with choked flow storehouse (10), the lower extreme left side fixedly connected with feed liquor pipe (11) of control valve base (9), the lower extreme right side fixedly connected with drain pipe (12) of control valve base (9).

2. The packing seal device for the control valve rod of claim 1, characterized in that the middle of the rotating shaft (7) is provided with a packing groove (14), one side of the packing groove (14) is provided with a packing (15), and the packing groove (14) is distributed on the outer side surface of the rotating shaft (7) in a surrounding manner.

3. The packing device for sealing a control valve stem according to claim 1, wherein a main gear (17) is fixedly connected to the lower end of the rotating base (8), auxiliary gears (18) are arranged on one side of the main gear (17), gear housings (16) are arranged on the outer sides of the auxiliary gears (18), and the auxiliary gears (18) are symmetrically distributed around the main gear (17).

4. The packing device for the sealing of the valve rod of the control valve according to claim 1, characterized in that a pressure plate (13) is arranged at the lower end of the fixed block (6), a through hole (21) is arranged in the middle of the pressure plate (13), the through hole (21) is in through connection with the rotating shaft (7), a rotating ring (22) is movably connected to the middle of the upper end of the fixed block (6), and the rotating ring (22) is fixedly connected with the rotating shaft (7).

5. The sealing and packing device for the valve rod of the control valve is characterized in that a screw hole (20) is formed in one side of the fixing block (6), an adjusting bolt (19) is arranged in the middle of the screw hole (20), an adjusting nut (23) is arranged on one side of the adjusting bolt (19), and the adjusting bolt (19) is fixedly connected with the pressure plate (13).

6. The packing seal for a control valve stem according to claim 1, characterized in that the flow-blocking chamber (10) is located directly below the valve stem (2), and the inner diameter of the flow-blocking chamber (10) is adapted to the outer diameter of the valve stem (2).